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Quicktime exports abnormally large
I have exported a few projects to quicktime in the last couple of days. These projects are just under one hour and when they export, the file size is rediculously large. Something like 11 gigs for 50 minutes of video! Other videos I have exported in the past that were longer and exported to be much smaller, say 3 gigs. I think it might have something to do with the fact that we had to trash the plist recently to get playback up again. Where do I go to set the preferences back to compress correctly. I export to DV NTSC. Could there be anything else that I am not doing correctly?
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4 Replies
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I guess it depends on what you’re trying to do. DV is 3.6MB per second, so 50 minutes is 3.6×60 (216MB per minute)
x50 minutes gets you a file size of 10,800MB, or 10.8gigs. Sounds right to me. If you’re trying to compress that even further
you’ll have to tell us more about what you’re trying to do. Do you want to compress DV even more? Do you want video
smaller than 720×480? If you export “Using Quicktime Compression” you get settings (under options) to compress DV even more.
Ed -
Ok I understand. So is it safe to assume that the preferences for exporting were altered from the default so they compressed to a much smaller size when i was getting 3 gigs for a video over 1 hour a week ago? So it may also be that the QT movies that I exported a week ago may be lower quailty because they are in fact compressed more than usual. But your reply makes perfect sense, I’m just wondering about those other videos that are over 1 hour but only like 3 gigs in size.
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When I select DV in Export to Quicktime Conversion, the default is “Medium” for quality. I don’t know how much
more that default compresses the DV file, but it’s safe to say it’s not as high quality as setting it to “High”,
which essentially gives you a file that isn’t compressed any more than the DV file was to begin with 5:1.
If you use Export to Quicktime and select current settings, it should give you a straight DV export (at 3.6MBs).
I usually go for the “Conversion” settings just so I know exactly what the settings are (you don’t get to see them
in the regular Export to Quicktime).
Ed -
Thank you very much, you’ve been extremely helpful!
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